DE2537715C3 - Druckminderventilanordnung und -ausbildung für die Verbindung der beiden Druckräume eines zweistufigen teleskopischen Grubenstempels - Google Patents
Druckminderventilanordnung und -ausbildung für die Verbindung der beiden Druckräume eines zweistufigen teleskopischen GrubenstempelsInfo
- Publication number
- DE2537715C3 DE2537715C3 DE19752537715 DE2537715A DE2537715C3 DE 2537715 C3 DE2537715 C3 DE 2537715C3 DE 19752537715 DE19752537715 DE 19752537715 DE 2537715 A DE2537715 A DE 2537715A DE 2537715 C3 DE2537715 C3 DE 2537715C3
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- telescopic
- cylinder
- reducing valve
- stamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- MJUVRTYWUMPBTR-MRXNPFEDSA-N 1-(2,2-difluoro-1,3-benzodioxol-5-yl)-n-[1-[(2r)-2,3-dihydroxypropyl]-6-fluoro-2-(1-hydroxy-2-methylpropan-2-yl)indol-5-yl]cyclopropane-1-carboxamide Chemical compound FC=1C=C2N(C[C@@H](O)CO)C(C(C)(CO)C)=CC2=CC=1NC(=O)C1(C=2C=C3OC(F)(F)OC3=CC=2)CC1 MJUVRTYWUMPBTR-MRXNPFEDSA-N 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Control Of Presses (AREA)
- Safety Valves (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752537715 DE2537715C3 (de) | 1975-08-23 | 1975-08-23 | Druckminderventilanordnung und -ausbildung für die Verbindung der beiden Druckräume eines zweistufigen teleskopischen Grubenstempels |
| FR7625142A FR2322319A1 (fr) | 1975-08-23 | 1976-08-16 | Soupape de detente reliant les deux verins d'un etancon hydraulique telescopique a deux etages |
| GB3451876A GB1553682A (en) | 1975-08-23 | 1976-08-19 | Pressure-reducing valve for providing a two-stage telescopic hydraulic pit stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752537715 DE2537715C3 (de) | 1975-08-23 | 1975-08-23 | Druckminderventilanordnung und -ausbildung für die Verbindung der beiden Druckräume eines zweistufigen teleskopischen Grubenstempels |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2537715A1 DE2537715A1 (de) | 1977-03-03 |
| DE2537715B2 DE2537715B2 (de) | 1980-03-13 |
| DE2537715C3 true DE2537715C3 (de) | 1980-11-06 |
Family
ID=5954757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752537715 Expired DE2537715C3 (de) | 1975-08-23 | 1975-08-23 | Druckminderventilanordnung und -ausbildung für die Verbindung der beiden Druckräume eines zweistufigen teleskopischen Grubenstempels |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2537715C3 (enExample) |
| FR (1) | FR2322319A1 (enExample) |
| GB (1) | GB1553682A (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA804072B (en) * | 1979-08-07 | 1981-06-24 | Dobson Park Ind | Telescoping jack |
| GB2176845B (en) * | 1985-06-21 | 1989-04-26 | 600 Group Plc The | Improvements in telescopic devices such as crane jibs |
| US4834135A (en) * | 1988-11-01 | 1989-05-30 | Sun Hydraulics Corp. | Pressure control valve |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2359017A (en) * | 1942-03-04 | 1944-09-26 | Landis Tool Co | Relief valve |
| DE932784C (de) * | 1949-12-28 | 1955-09-08 | Doering G M B H | Hydraulischer Grubenstempel mit Pressluftbedienung |
| FR1112062A (fr) * | 1954-04-12 | 1956-03-08 | Klockner Bergbau Victor Ickern | Installation pour le soutènement progressif à l'avancement de travaux souterrains ou analogues |
| GB882802A (en) * | 1958-09-09 | 1961-11-22 | Bwg Bergwerk Walzwerk | Improvements in and relating to telescopic hydraulic pit-prop |
| FR78068E (fr) * | 1960-06-11 | 1962-06-01 | Gutehoffnungshuette Sterkrade | étançon de mine télescopique hydraulique en plusieurs parties |
| US3329250A (en) * | 1965-03-02 | 1967-07-04 | May Pressenbau Gmbh | Overload safety device for presses |
| GB1368654A (en) * | 1971-03-11 | 1974-10-02 | Bergwerksverband Gmbh | Pneumatically-operated valve for use with for example hydraulic cylinders used in consolidating means for mineworkings |
| DE2146502C3 (de) * | 1971-09-17 | 1982-04-29 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Ventilanordnung zum Setzen hydraulischer Grubenstempel mit hoher Setzkraft |
| FR2264462A7 (en) * | 1974-02-18 | 1975-10-10 | Midi Houilleres Loire Hou Cent | Safety valve for hydraulic mine prop - has truncated conical spring loaded piston and radial outlets |
| DE2447425B2 (de) * | 1974-10-04 | 1976-07-29 | Hermann Hemscheidt Maschinenfabrik, 5600 Wuppertal | Steuerventil fuer hydraulisch schreitenden strebausbau |
-
1975
- 1975-08-23 DE DE19752537715 patent/DE2537715C3/de not_active Expired
-
1976
- 1976-08-16 FR FR7625142A patent/FR2322319A1/fr active Granted
- 1976-08-19 GB GB3451876A patent/GB1553682A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1553682A (en) | 1979-09-26 |
| DE2537715A1 (de) | 1977-03-03 |
| FR2322319B1 (enExample) | 1982-05-14 |
| FR2322319A1 (fr) | 1977-03-25 |
| DE2537715B2 (de) | 1980-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| EI | Miscellaneous see part 3 | ||
| XX | Miscellaneous: |
Free format text: NACHZUTRAGEN MITINHABER: ECKER,F.,NEUNKIRCHEN |
|
| 8339 | Ceased/non-payment of the annual fee |